Stool



FIG. 1 is a perspective view of a stool.

FIG. 2 is a front elevation view thereof. A rear elevation view is identical to the front elevation side elevation view.

FIG. 3 is a right side elevation view thereof. A left side elevation view is identical to the right side elevation view.

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

CLAIM The ornamental design for a stool, as shown and described. 